<div id="readability-page-1"><div> ** Shares in Australia's Rio Tinto gain as much as 1.8% to a record high of A$143.89 ** Analysts at UBS say confidence has increased in the miner's lithium strategy after a deep dive into its Argentina assets, citing improved portfolio optionality, asset quality and execution focus** Argentina brine assets remain central, with UBS flagging targeted C1 cash costs of about $5–6 per kg LCE** Rio could reach 10–12% global lithium market share by the mid-2030s, assuming disciplined delivery at Fenix and Rincon and stable operating conditions in Argentina, says brokerage** Execution is key, with UBS saying projects must “earn the right to grow” as production ramps up at Fenix and Rincon over the next several years** Brokerage keeps &#34;neutral&#34; rating and A$140 PT** Stock up 21.1%, YTD</div></div>

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UBS analysts express confidence in Rio Tinto's lithium strategy, highlighting Argentina's brine assets as central to its ambitions. They project a potential 10-12% global market share by the mid-2030s, contingent on disciplined execution at Fenix and Rincon. Despite a "neutral" rating and A$140 price target, Rio Tinto's stock has risen 21.1% YTD, reaching a record high of A$143.89.

Australia's Rio Tinto’s rises; UBS sees company's Argentinian brine assets powering lithium ambitions